Dependencies for the affinity router and the
affinity routing daemon.
Change-Id: Icda72c3594ef7f8f0bc0c33dc03087a4c25529ca
diff --git a/vendor/github.com/coreos/etcd/pkg/transport/keepalive_listener.go b/vendor/github.com/coreos/etcd/pkg/transport/keepalive_listener.go
new file mode 100644
index 0000000..4ff8e7f
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/pkg/transport/keepalive_listener.go
@@ -0,0 +1,94 @@
+// Copyright 2015 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package transport
+
+import (
+ "crypto/tls"
+ "fmt"
+ "net"
+ "time"
+)
+
+type keepAliveConn interface {
+ SetKeepAlive(bool) error
+ SetKeepAlivePeriod(d time.Duration) error
+}
+
+// NewKeepAliveListener returns a listener that listens on the given address.
+// Be careful when wrap around KeepAliveListener with another Listener if TLSInfo is not nil.
+// Some pkgs (like go/http) might expect Listener to return TLSConn type to start TLS handshake.
+// http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/overview.html
+func NewKeepAliveListener(l net.Listener, scheme string, tlscfg *tls.Config) (net.Listener, error) {
+ if scheme == "https" {
+ if tlscfg == nil {
+ return nil, fmt.Errorf("cannot listen on TLS for given listener: KeyFile and CertFile are not presented")
+ }
+ return newTLSKeepaliveListener(l, tlscfg), nil
+ }
+
+ return &keepaliveListener{
+ Listener: l,
+ }, nil
+}
+
+type keepaliveListener struct{ net.Listener }
+
+func (kln *keepaliveListener) Accept() (net.Conn, error) {
+ c, err := kln.Listener.Accept()
+ if err != nil {
+ return nil, err
+ }
+ kac := c.(keepAliveConn)
+ // detection time: tcp_keepalive_time + tcp_keepalive_probes + tcp_keepalive_intvl
+ // default on linux: 30 + 8 * 30
+ // default on osx: 30 + 8 * 75
+ kac.SetKeepAlive(true)
+ kac.SetKeepAlivePeriod(30 * time.Second)
+ return c, nil
+}
+
+// A tlsKeepaliveListener implements a network listener (net.Listener) for TLS connections.
+type tlsKeepaliveListener struct {
+ net.Listener
+ config *tls.Config
+}
+
+// Accept waits for and returns the next incoming TLS connection.
+// The returned connection c is a *tls.Conn.
+func (l *tlsKeepaliveListener) Accept() (c net.Conn, err error) {
+ c, err = l.Listener.Accept()
+ if err != nil {
+ return
+ }
+ kac := c.(keepAliveConn)
+ // detection time: tcp_keepalive_time + tcp_keepalive_probes + tcp_keepalive_intvl
+ // default on linux: 30 + 8 * 30
+ // default on osx: 30 + 8 * 75
+ kac.SetKeepAlive(true)
+ kac.SetKeepAlivePeriod(30 * time.Second)
+ c = tls.Server(c, l.config)
+ return c, nil
+}
+
+// NewListener creates a Listener which accepts connections from an inner
+// Listener and wraps each connection with Server.
+// The configuration config must be non-nil and must have
+// at least one certificate.
+func newTLSKeepaliveListener(inner net.Listener, config *tls.Config) net.Listener {
+ l := &tlsKeepaliveListener{}
+ l.Listener = inner
+ l.config = config
+ return l
+}